The 5W motor operated for 10s and pulled the cable by 2m. The cable is connected to a single fixed followed by a single movable pulley. Another cable connects the movable pulley and an initially stationary Block A (4kg) on a horizontal Surface X. Between Block A and the horizontal Surface X, start=0.15 and slide = 0.1. Just after 0.1s, Block A had an elastic collision with Block B (2kg) on a horizontal Surface Y with negligible friction. 1) Calculate the force experienced by the cable, that is connected to Block A. 2) Calculate the net force on Block A, before the collision. 3) Calculate the velocity of Block A, just before collision. 4) Calculate the velocity of Block B, after collision. 5) Suggest how to increase the velocity of Block B by 50%. A B Motor Surface X Surface Y